package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.swing.text.Utilities;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceimpl implements DishService {


    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;


    @Transactional
    public void savewithflavor(DishDTO dish){

        Dish dish1=new Dish();
        BeanUtils.copyProperties(dish,dish1);
        dish1.setCreateTime(LocalDateTime.now());
        dish1.setUpdateTime(LocalDateTime.now());
        dish1.setCreateUser(BaseContext.getCurrentId());
        dish1.setUpdateUser(BaseContext.getCurrentId());

        //增加一条菜品
        dishMapper.insert(dish1);

        Long id = dish1.getId();



        //增加多条口味

        List <DishFlavor> dishFlavors=dish.getFlavors();
        if(dishFlavors.size()>0&&dishFlavors!=null){
            dishFlavors.forEach(dishFlavor->{
                dishFlavor.setDishId(id);
            });
            dishFlavorMapper.insert(dishFlavors);

        }



    }



    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO){


        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page =dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());




    }



    public void deleteBatch(List<Long> ids)
    {
        //判断当前菜品是否能够删除 --是否存在起售中的菜品
        for (Long id : ids) {
            Dish dish =dishMapper.getByid(id);
            if(dish.getStatus()==1){
                //起售中
                throw  new DeletionNotAllowedException("菜品在售");
            } 
        }


        //判断当前菜品是否能够删除--是否被套餐关联
        List<Long> setmealids= setmealDishMapper.getSetmealDishIdsBySDishId(ids);
        if(setmealids.size()>0&&setmealids!=null){

            throw new DeletionNotAllowedException("菜品被关联");
        }



//        //删除菜品表中的菜品数据
//        for (Long id : ids) {
//            dishMapper.deleteByid(id);
//            //删除菜品关联的口味套餐
//            dishFlavorMapper.deleteByDishId(id);
//
//        }



//根据菜品id集合批量删除菜品数据
        dishMapper.deleteByids(ids);


//根据菜品id集合批量删除口味数据
        dishFlavorMapper.deleteByDishIds(ids);



    }




    public DishVO getByIdwithFlavor(Long id){
        //根据id查询菜品数据
        Dish dish=dishMapper.getByid(id);


        //根据菜品id查询口味数据
        List<DishFlavor>dishFlavors= dishFlavorMapper.getByDishId(id);


        //将查询到的数据封装到VO

        DishVO dishVO = new DishVO();

        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;


    }



    public void updatewithFlavor(DishDTO dishDTO){
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //修改菜品表的基本信息
        dishMapper.update(dish);
        //删除原有口味数据
        dishFlavorMapper.deleteByDishId(dishDTO.getId());




        List <DishFlavor> dishFlavors=dishDTO.getFlavors();
        if(dishFlavors.size()>0&&dishFlavors!=null){
            dishFlavors.forEach(dishFlavor->{
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insert(dishFlavors);

        }

    }




    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }




    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }



}
